Adjustment device for a training machine

ABSTRACT

The present invention relates to an adjustment device ( 2 ) for a training machine ( 1 ), especially a triceps extension or a biceps curl, for strengthen training and rehabilitation, having an arm or elbow rest member ( 50, 51 ) and pivotably connected handles ( 23, 24 ) are provided on each side of a seat ( 17 ). Furthermore, the arm or elbow rest members ( 50, 51 ) as well as the handles ( 23, 24 ) are provided at the lower ends of at both sides of the seat arranged arms ( 18, 19 ) pivotably suspended at a position at the top of the training machine ( 1 ). Moreover, the adjustment device ( 2 ) includes control element ( 41, 42, 48, 49 ) for laterally adjusting the positions of the arms and in turn also the arm or elbow rest members ( 18, 19 ) as well as the handles ( 23, 24 ).

TECHNICAL FIELD

The present invention is related to an adjustment device for a training machine, especially a triceps extension or a biceps curl, for strengthen training and rehabilitation of the kind which is defined in the pre-characterising portion of claim 1.

BACKGROUND OF THE INVENTION

The training machine known as triceps extension has handles which are to be gripped by the user when exercising. The general triceps extension machine has a weight stack with weights whereas the user selects a weight package to be lifted, normally consisting of a selected number of weights from the top of the package. The selected weights are then lifted by means of a non-elastic wire or belt when the user draws the handles of the machine towards his body.

Such a triceps extension machine is, e.g., disclosed in U.S. 2002/0198087 and U.S. Pat. No. 5,897,467. These known triceps extension machines do not take the body structure of the user in consideration, i.e., the width across the shoulders is varying from person to person so that when a weight package of a weight stack is lifted or lowered, the user often must bend wrist or elbow to be able to perform the exercise.

OBJECT OF THE INVENTION

The object of the present invention is to provide an adjustment device for a training machine of the type mentioned above which sets aside the above mentioned problem.

SUMMARY OF THE INVENTION

The object is achieved by means of an adjustment device for a training machine having the characteristics defined in the characterising portion of claim 1.

Preferred embodiments of the invention have been given the characteristics which are apparent in the sub claims.

When a person lowers and lifts a selected number of weights of a weight package, the person performing the exercise can adjust the position of the handles laterally, which makes the exercise movement more comfortable and does not end in injuries due to unnatural bending stresses.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described in the following with reference to the appended drawings showing a preferred embodiment.

FIG. 1 shows a side view of a training machine for strength training and rehabilitation with an adjustment device according to the invention.

FIG. 2 shows a perspective view from above of the training machine in FIG. 1.

FIG. 3 shows a view from behind of the training machine in FIG. 1.

FIG. 4 shows a perspective view from below of the training section of the training machine illustrating the adjustment device according to the invention in one position.

FIG. 5 shows a perspective view similar to FIG. 4 illustrating the adjustment device according to the invention in another position.

FIG. 6 shows a partial perspective view in greater scale of a detail of the training machine in said another position according to FIG. 5.

FIG. 7 shows a partial perspective view similar to FIG. 6 but with a part removed for clarity reasons.

DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION

In FIGS. 1-7 a preferred embodiment of a training machine 1, especially a triceps extension, for strength training and rehabilitation with an adjustment device 2 according to the invention is shown. The machine 1 consists of two main sections, viz., a training section 3 and a weight section 4 which are fixed connected to each other by means of horizontal beams 5, 6 and 7 which are fixed to the machine. The weight stack section 4 has an inner substantially rectangular frame portion 8, which is turnably journalled in pivot pins (not shown). The frame portion 8 supports the weight stack 9 and is tiltable from a vertical position as is best seen in FIG. 1 to an inclined position shown with broken lines at 8 a in FIG. 1. By changing the inclination of the frame the load can be altered for the user as is disclosed in my PCT-patent application WO 2007/037755. The beams 5, 6 and 7 as well as the beams 10, 11, 12, 13 and 14 comprised in the frame construction of the training machine 1, which portions are fixed connected to each other, are advantageously welded to each other to achieve a solid construction, which shall be able to stand high loads concerning pull and press loads as well as vibrations. Base plates 15 are fixed to the lowest beams 10 11, 12, and 14 under the machine 1, said plates being provided with bolt holes 16 for fixing the machine 1 to a floor or the like.

The training section 3 comprises a seat 17 for the user to rest on while exercising, two journally mounted arms 18 and 19 turnably connected at 18 a and 19 a, respectively, at the top of the machine to an arcuately formed top beam 20 which is attached to the top of the beam 10, preferably by welding. Non-elastic wire or belts 21 and 22, preferably made by the material Kevlar®, are each fixed to pivotable handles 23 and 24 over pulleys 25 and 26. The belts 21, 22 are lead from the handles 23, 24 around further pulleys 27, 28, 28 a via an equalization device (not shown) to a transmission device 29.

The transmission device has a disc 30 which is fixed to a shaft 31. At the other end of the shaft 31 a similar disc 32 is fixed to a further non-elastic wire or belt 33, preferably made by the material Kevlar°, which is led over not shown pulleys to the weight stack 8. The discs 30, 32 are journalled in bearings in brackets 34 and 35 which are fixed to the frame 12, 14 of the machine 1.

The adjustment device 2 according to the invention is best shown in FIGS. 4-7 and comprises a central link 36 (se FIG. 7) which is turnably attached to the frame beam 10 at the centre thereof. Link arms 37 and 38 are connected at one end to the each end of the central link 36 and at the opposite ends at arcuate arms 39 and 40 which in turn are rigidly fixed to the arms 18 and 19, respectively. A T-formed handle member 41 is spring-loaded mounted in a tube 42 which is rigidly connected to the central link 36 via a member 43. An adjustment scale holder 45 having a substantial U-form is bolted to the frame beam 10 at 46 and 47 so that it astrides over the link 36. At a central portion of the holder 45 a substantially U-formed scale bracket 48 is fixed having three holes 49 in an arcuate central portion thereof. The holes 49 are so situated that each of them represent a lateral position of the arms 18 and 19 when the tip of the T-formed handle member 41 protruding out of the tube 42, as the spring thereof is released, is introduced into a selected hole. In the drawings, three different positions for the lateral positioning of the arms are shown, but it is evident that the number of positions of the arms can be other within the scope of the claims.

A user of the machine 1, before be seated on the seat chooses the lateral position of the arms 18 and 19 which is best apt to his body structure by means of the handle member 41. The user will then get a comfortable lateral distance between his arm elbows resting on pads 50 and 51 so that he can perform his exercise without bending elbows or wrists. Reference number 49 denotes a selection device to select a desired group of weights of the weight stack 8 to be lifted.

Instead of the T-formed handle member 41 the adjustment device 2 according to the invention could be provided with any other kind of adjustable control means, as, e.g., a knob (not shown) fixed to the central link 36 and having a push bottom which when pressed provides that a pin inside the knob is disengaged from one of the holes in a scale on a member which is fixed to the frame, each hole constituting an adjustable set position of the laterally pivotably arms 18 and 19. When the knob is turned and the push button is released the pin is provided to enter another one of the position holes in the scale.

Reference number 52 denotes shields, preferably made of transparent plastic mounted around the weight section 4 to protect the user or other persons from injuries due to the movement of the frame portion 8 and the weight stack 9.

Although one embodiment is disclosed in the description and drawings, the training machine according to the invention can be modified within the scope of the appended claims. 

1. An adjustment device (2) for a training machine (1), especially a triceps extension or a biceps curl, for strengthen training and rehabilitation, having an arm or elbow rest member (50, 51) and pivotably connected handles (23, 24) are provided on each side of a seat (17), characterised in that said arm or elbow rest members (50, 51) and said handles (23, 24) are provided at the lower ends of at both sides of said seat arranged arms (18, 19) pivotably suspended at a position at the top of said training machine (1) and in that said adjustment device (2) comprises control means (41, 42, 48, 49) for laterally adjusting the positions of said arms and in turn also said arm or elbow rest members (18, 19) as well as said handles (23, 24).
 2. An adjustment device according to claim 1, characterised in that said adjustments device (2) is further provided with a control member (41) which can be set in selected position of a pre-determined number of positions of said arm or elbow rest member (18, 19) and said handles (23, 24).
 3. An adjustment device according to claim 1, characterised in that said arm or elbow rest members (18,19) are pivotably attached at the top (20) of a frame portion (11) of the training machine (1) so that they are able to be turned laterally.
 4. An adjustment device any according to claim 1, characterised in that said adjustment device (2) further comprises at each side a linkage means (37, 38) each connected at one end thereof to a turnable link member (36), which is pivotably fastened at its centre at a frame portion (10) of the training machine (1), and at the other end directly to said arm or elbow rest member (18,19) or to an arm portion (39, 40) fixed to said arm or elbow rest member (18,19).
 5. An adjustment device according to claim 1, characterised in that said control means (41) is intended to interact with a scale member (48), preferably attached to the frame of the machine, and in that when turning said control means which is fixed to said central link member (36) the desired position on the scale member can be set.
 6. An adjustment device according to claim 5, characterised in that said control means comprises a T-formed shaft (41) which is spring-loaded within a tube (42) which is fixed connected to said link member (36), said shaft being able to be engaged with said scale member (48).
 7. An adjustment device according to claim 5, characterised in that said control means comprises a knob with a spring-loaded push button with a pin, said knob being fixed connected to said link member (36) and said pin being able to be engaged with said scale member (48).
 8. An adjustment device according to claim 5, characterised in that each said laterally adjusted position of said arm or elbow rest members (18, 19) is a hole (49) provided in said scale member (48) which is fixed to a frame portion (10) of the training machine (1).
 9. An adjustment device according to claim 2, characterised in that said arm or elbow rest members (18,19) are pivotably attached at the top (20) of a frame portion (11) of the training machine (1) so that they are able to be turned laterally.
 10. An adjustment device any according to claim 2, characterised in that said adjustment device (2) further comprises at each side a linkage means (37, 38) each connected at one end thereof to a turnable link member (36), which is pivotably fastened at its centre at a frame portion (10) of the training machine (1), and at the other end directly to said arm or elbow rest member (18,19) or to an arm portion (39, 40) fixed to said arm or elbow rest member (18,19).
 11. An adjustment device any according to claim 3, characterised in that said adjustment device (2) further comprises at each side a linkage means (37, 38) each connected at one end thereof to a turnable link member (36), which is pivotably fastened at its centre at a frame portion (10) of the training machine (1), and at the other end directly to said arm or elbow rest member (18,19) or to an arm portion (39, 40) fixed to said arm or elbow rest member (18,19).
 12. An adjustment device according to claim 2, characterised in that said control means (41) is intended to interact with a scale member (48), preferably attached to the frame of the machine, and in that when turning said control means which is fixed to said central link member (36) the desired position on the scale member can be set.
 13. An adjustment device according to claim 3, characterised in that said control means (41) is intended to interact with a scale member (48), preferably attached to the frame of the machine, and in that when turning said control means which is fixed to said central link member (36) the desired position on the scale member can be set.
 14. An adjustment device according to claim 4, characterised in that said control means (41) is intended to interact with a scale member (48), preferably attached to the frame of the machine, and in that when turning said control means which is fixed to said central link member (36) the desired position on the scale member can be set.
 15. An adjustment device according to claim 6, characterised in that each said laterally adjusted position of said arm or elbow rest members (18, 19) is a hole (49) provided in said scale member (48) which is fixed to a frame portion (10) of the training machine (1).
 16. An adjustment device according to claim 7, characterised in that each said laterally adjusted position of said arm or elbow rest members (18, 19) is a hole (49) provided in said scale member (48) which is fixed to a frame portion (10) of the training machine (1). 